Although usually classified as one of the Windward Islands, Dominica, located between Guadeloupe to the N and Martinique to the S , marks the midpoint of the Lesser Antilles. To the E lies the Atlantic Ocean, to the W the Caribbean Sea. The island has an area of 754 sq km (291 sq mi) and is 47 km (29 mi) long by 26 km (16 mi) wide, with a coastline of 148 km (92 mi). Comparatively, the area occupied by Dominica is slightly more than four times the size of Washington, D.C.
Dominica's capital city, Roseau, is located on the southwest coast of the island.